Amount of loss contingency liability.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Commitments and Contingencies - Additional Information (Detail) - USD ($)	Sep. 30, 2016	Dec. 31, 2015	Aug. 14, 2015
Loss Contingencies [Line Items]
Damage claim for alleged unpaid licenses			$ 1,500,000
Indemnification Obligation [Member]
Loss Contingencies [Line Items]
Indemnification obligations, liabilities	$ 0	$ 0